Managing Serviceguard 14th Edition, June 2007

Configuring Packages and Their Services
Choosing Package Modules
Chapter 6292
You can configure a total of 15 resource_up_values per package. For
example, if there is only one resource (resource_name) in the package,
then a maximum of 15 resource_up_values can be defined. If two
resource_names are defined and one of them has 10
resource_up_values, then the other resource_name can have only 5
resource_up_values.
concurrent_vgchange_operations Specifies the number of concurrent
volume group activations or deactivations allowed during package
startup or shutdown.
Legal value is any number greater than zero. The default is 1.
If a package activates a large number of volume groups, you can improve
the package’s start-up and shutdown performance by carefully tuning
this parameter.
Tune performance by increasing the number a little at a time and
monitoring the effect on performance at each step; stop increasing it, or
reset it to a lower level, as soon as performance starts to level off or
decline.
Factors you need to take into account include the number of CPUs, the
amount of available memory, the HP-UX kernel settings for nfile and
nproc, and the number and characteristics of other packages that will be
running on the node.
vgchange_cmd Specifies the method of activation for each HP-UX
Logical Volume Manager (LVM) volume group identified by a vg entry
(see page 294). Replaces VGCHANGE which is still supported in the
package control script for legacy packages; see “Configuring a Legacy
Package” on page 363.
The default is vgchange -a e.
The configuration file contains several other vgchange command
variants; either uncomment one of these and comment out the default, or
use the default. For more information, see the explanations in the
configuration file, “LVM Planning” on page 148, and “Creating the
Storage Infrastructure and Filesystems with LVM and VxVM” on
page 221.
IMPORTANT Volume groups for multi-node and system multi-node packages must be
activated in shared mode: vgchange -a s, which is only available if the
add-on product Serviceguard Extension for Real Application Cluster